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新型干法线均化链的组成（）、（）、（）、（）、（）。
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跌打营养汤功效与作用
Once we learn the rules for map reading, they seem so simple: up is north, blue is water, a star stands for a capital. But when and how do we learn to read a map? Research shows that even three-year-olds can master, at least in a basic way, the key map-reading concept(概念): a map is a two-dimensional symbol(二维的符号)for three-dimensional space. Linda Acredolo of the University of California, showed a child a map of a room pointed out on it where a toy was hidden and asked the child to find that toy. Depending on the maps orientation(方位), about half the three-year-olds could successfully do so. Three years may be the age at which the ideas become fully understood. Judy Deloache of the University of Illinois let children watch her hide a small toy in a scale model of a room and asked them to find a large one in a real room. "A three-year-olds can do it, but a two-year-olds has no idea that the model has to do with anything larger, " she says. But even if the basic concept is there early, Lynn Liben and Roger Downs of Pennsylvania State University found that children still have a lot to learn. Second graders believe that north is always at the top of a map because of the hanging maps they have seen. "If you asked them to close their eyes and point in the direction of north, often theyll point straight up," says Lihen. She says that children get map-reading skills gradually, and teachers must begin by using maps of familiar areas: their own classrooms, homes, and neighbourhoods.The first two experiments show that______.A．children have better understanding than grown-upsB．children have special natural ability for map readingC．children are more interested in toys than in mapsD．children can start to learn map-reading early
水体的作用（）。
变更的机械密封在考虑经济性的前提下，材料等级不（）于原材料等级，保证原整机性能。但在（）、型号等方面，应尽量采用现行的、适合本行业的及本装置的国家及行业标准。
十八大报告提出，要深化干部人事制度改革，建设高素质执政骨干队伍，完善（）选拔干部方式。
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区城乡建设局批复同意某银行住宅楼选址，并向其颁发许可证。拟建的住宅楼与张某等120户居民居住的住宅楼间距为9.45米。张某等20人认为该批准行为违反了国家有关规定，向法院提起了行政诉讼。对此，下列哪些选项是错误的?( ) A．因该批准行为涉及张某等人的相邻权，故张某等人有权提起行政诉讼 B．张某等20户居民应当推选2～5名诉讼代表人参加诉讼 C．法院可以通知未起诉的100户居民作为第三人参加诉讼 D．张某等20户居民应当提供符合法定起诉条件的证据材料
从事特种作业的人员，必须经过专门的培训和考核，取得（）证后方可上岗操作。